Which can act as either an acid or a base?
- A
Na⁺
- B
ClO₄⁻
- C
Cl⁻
- Dcheck_circle
HCO₃⁻
Explanation
HCO₃⁻ can lose H⁺ (→ CO₃²⁻) or gain H⁺ (→ H₂CO₃) — amphiprotic.
Introduction to Acids and Bases
AP Chemistry· difficulty 3/5
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